MAL-2026-5470 Malicious code in getd-typescript-eslint-rules (npm)

On npm install, the postinstall.js script collects the installer's hostname, OS username, platform, current working directory, CI environment markers (CI, BUILD_BUILDID, AGENT_NAME), and package name/version, then sends them as query parameters in an HTTPS GET to a hardcoded webhook.site collector (https://webhook.site/18dc4281-d366-438a-9186-76fbcd56ade5). Errors are swallowed so the install does not fail visibly. The package's own metadata declares it a typosquat targeting @getd/typescript-eslint-rules and frames the beacon as 'defensive security research,' but the on-install behavior identifies any installer (including internal CI build agents) to a third-party endpoint regardless of stated intent.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.